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Finding the Fourth Proportional to 438,645.00, 658,030.33 and 135,064.90

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Solution

The fourth proportional to 438,645.00, 658,030.33 and 135,064.90 is: 202,616.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,645.00 : 658,030.33 = 135,064.90 : x
  2. Step 2: Convert to fraction form
    438,645.00/658,030.33 = 135,064.90/x
  3. Step 3: Cross multiply
    438,645.00x = 658,030.33 × 135,064.90
  4. Step 4: Simplify right side
    438,645.00x = 88,876,801,709.79
  5. Step 5: Solve for x
    x = 88,876,801,709.79/438,645.00
  6. Step 6: Final answer
    x = 202,616.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.